Pre-foamed particles of polypropylene-base resin

Details Pre-foamed particles of polypropylene-base resin Pre-foamed particles of polypropylene-base resin

C - Chemistry, Metallurgy

08

J

403/78, 403/80

C08J 9/22 (2006.01) C08J 9/18 (2006.01) C08J 9/228 (2006.01) C08L 23/10 (2006.01)

Patent

CA 1229200

Abstract PRE-FOAMED PARTICLES OF POLYPROPYLENE-BASE RESIN In pre-foamed particles of a propylene-base resin obtained by foaming raw particles of the propylene-base resin, the relation, G1 - G2 ? 10%, exists between the content G1 (%) of matter, which is contained in the pre-foamed particles and is insoluble in boiling n-heptane, and the content G2 (%) of matter contained in the raw particles and insoluble in boiling n-heptane. The pre-foamed particles have excellent moldability and can hence provide with ease low-density (highly-expanded) molded articles, which enjoy superb dimensional accuracy, good surface conditions, low percent water absorption, excellent impact and chemical resistance.

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